CN103696318A - Production method of soft and fluffy facial tissue - Google Patents
Production method of soft and fluffy facial tissue Download PDFInfo
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Abstract
The invention relates to a papermaking method, and particularly relates to a method for producing household paper facial tissue by taking bagasse as a main raw material. The technical scheme is as follows: the bagasse pulp and a small amount of wood pulp at a high ratio are used as main raw materials, wherein the weight ratio of the bagasse pulp to the wood pulp is (65-75):(25-35); five grit removal processes are adopted to adjust the previous and later paper pulp concentration of each piece of equipment; a flexible beating process for fibrillation is adopted; a process of high-speed hot air penetrating through paper sheets is adopted to produce the soft and fluffy facial tissue with high toughness and low cost and meeting the health standard.
Description
Technical field
The present invention relates to a kind of papermaking process, particularly take the method for bagasse as main material production paper for daily use (face tissue).
Background technology
Face tissue is one way of life paper using, the new varieties that recent year develops, the features such as it is low with its health, convenience, cost, environmental protection replace electric oven mobile phone by extensive universal use gradually, and be subject to more and more consumer's favor, it not only can be used for drying moisture content, greasy dirt on hand, more can clean household.Someone once carried out overtesting, after washing one's hands respectively with tissue, smear towel, drier hand, the bacterium then detecting is on hand residual, result shows that the bacterium of tissue is residual minimum.Its existing big or middle city, hotel, hotel, company and family just is at home used widely, and a blank of China's paper for daily use aspect has been filled up in its appearance.Along with the raising of people's living standard, the use of face tissue will be more and more extensive.
Face tissue kind is in the market more, because the type that each producer adopts is different, raw material are different, and technology is different, the product quality of producing is uneven, but really can make completely satisfied insufficient of consumer, face tissue requires soft, good water absorption, there are higher dry, wet strength, and country not yet puts into effect the QUALITY STANDARD of face tissue, each enterprise QUALITY STANDARD of making by oneself of using more, technical indicator is both nonstandard not comprehensive yet.
More existing pertinent literature reports of production of domestic relevant face paper for daily use, for example:
1, Chinese patent, title: utilize bagasse for the manufacture paper with pulp method and apparatus of high life paper using of raw pulp, application (patent) number: the CN02115401.5 applying date: 2002.01.01 open (bulletin) number: CN1370888 open (bulletin) day: 2002.09.25, application (patent right) people: Guitang (Group) Co Ltd, Guangxi, address: No. 100, happiness road, Guigang, Guangxi Zhuang Autonomous Region, invention (design) people: Yang Herong, Yang Wanshan, agriculture is white, Chen Jian, Lv Yuedong, Yang Yi, Li Zeen, patent agency: Guangxi Nanning Gongping Patent Agency Co., Ltd., agent: carry out light industry, summary: a kind of to take self-control bleaching bagasse pulp be main raw material, be equipped with a small amount of wood pulp, in manufacturing paper with pulp, the method and apparatus of fine tissue, its method is by wood pulp and bagasse pulp difference pulping, discongest with defibrination after deliver to the double-layer headbox on high speed paper machine, wood pulp is attached on the casing wall of format roll on high speed paper machine, and bagasse pulp be attached to wood pulp above, rapid draing through efficient hot-air obtains product again, paper machine adopts double-layer headbox structure, single suction press roll, raise a gram drying cylinder, efficient hot-air gas hood, the toilet paper quality of manufacturing paper with pulp out is good, feel is fine and smooth, product quality approaches the quality of the toilet paper of producing with whole wood pulp, and almost sticky cylinder and the generation of broken end phenomenon in production process.Principal claim: 1, a kind of bagasse that utilizes is for the manufacture paper with pulp method of high life paper using of raw pulp, it is characterized in that: by wood pulp and bagasse pulp respectively pulping, discongest with defibrination after deliver to the double-layer headbox on high speed paper machine, wood pulp is attached on the casing wall of format roll on high speed paper machine, and bagasse pulp be attached to wood pulp above, rapid draing through efficient hot-air obtains product again, wherein stick to wood pulp on paper machine format roll cylinder face and account for 20-50%, the bagasse pulp that is attached to wood pulp surface is 50-80%.
2, Chinese patent, title: a kind of method of producing tissue, application (patent) number: CN201210430241.0, open (bulletin) number: CN102912676A open (bulletin) day: 2013.02.06, application (patent right) people: Quanzhou Hua Xiang Paper Co., Ltd, address: Jinjiang City, Quanzhou City, Fujian Province borders on industrial area, town in the west, invention (design) people: Chen Changxing, summary: a kind of method of producing tissue, select 70%-80% bleaching needle-point leaf pulp and 20%-30% straw pulp to make raw material, through pulper pulping, disc grinder making beating, add auxiliary material swelling agent, after softener and wet strength agent, in the moulding of Ha Bashi long mesh paper making machine system, dehydration, after squeezing, it is wrinkling in creping cylinder when wet web dryness is 30-45%, the angle of creping blade and cylinder face tangent line is 20-30 °, scraper is 60-85 ° in the basil of pasting cylinder face, the velocity ratio of creping cylinder and heated drying cylinder is 1.15-1.18:1, then, drier through heated drying cylinder, batch, after rewind slitting product.Its beneficial effect is to Select and Apply wet crepe explained hereafter tissue by fiber species and ratio, the tissue of producing has tensile strength and suitable air permeability, its intensity, wet strength, hydrophobicity, gas permeability, pliabilities etc. all reach higher standard, and matter high price is low.
3, Chinese patent, title: technology for making hand tissue, application (patent) number: CN01109815.5, open (bulletin) number: CN1306124, open (bulletin) day: 2001.08.01, application (patent right) people: Zhang Guoxing, address: No. 2, Jianshe Road, economic development zone, large Shatian, Nanning City, Guangxi Zhuang Autonomous Region, invention (design) people: Zhang Guoxing, a kind of technology for making hand tissue, raw material is comprised of major ingredient and auxiliary material, major ingredient is bleaching long fiber wood pulp and bleached chemical bagasse pulp, auxiliary material is by wet strength agent polyamine epichlorohydrin resin (PPE), softener alkyl ketene dimer and dispersant hydrolyzed polyacrylamide (PHP R200) form, by weight each component ratio, be: the long fibrillation wood pulp of major ingredient bleaching 5-25%, bleached chemical bagasse pulp 95-75%, auxiliary material wet strength agent polyamine epichlorohydrin resin (PPE) 0.5-2%, softener alkyl ketene dimer 0.3-1.2%, dispersant is polyethylene glycol oxide (PEO) 0.05-0.25% or hydrolysising polyethylene propylamine (PHP R200) 0.07-0.3%, its production procedure is: bleached chemical long fiber wood pulp and bleached chemical bagasse pulp are also adjusted respectively dense through hydrabrusher pulping respectively in stock tank, after fiberizer difference defibrination, enter respectively kowtow rear stock tank and be pumped in identical stock proportioner, carry out with slurry, flow into pond with slurry and be pumped into again machine chest, in machine chest, add auxiliary material swelling agent, softener and wet strength agent, be sent to web part of paper machine, now add auxiliary material dispersant, on web part of paper machine, form l Water Paper drying portion, wrinkling, reeling end, after processing department, outbound gets product.
Above-mentioned open source literature has been reported the production method of face tissue from different perspectives, but can't accomplish to produce soft fluffy, toughness is strong, cost is low and meets the face tissue of sanitary standard with less wood pulp.
Summary of the invention
The object of this invention is to provide a kind of cane syrup with high mixture ratio and select that applicable device fabrication goes out soft fluffy, toughness is strong, cost is low and meet the face tissue of sanitary standard.
The production method of the face tissue of soft fluffy of the present invention, comprises and the processing step of the preparation, pulp washing, desanding, defibrination, copy paper of paper pulp, dry, stamp and rolling is characterized in adopting following technical scheme:
1. the high mixture ratio cane syrup of take is main raw material(s) with a small amount of wood pulp, cane syrup: wood pulp weight ratio is 65-75:25-35;
2. adopt five road sand removing process usings, (1) establishes macropore gauze one before pulp washing case, except coarse sand; (2) sand removing machine is installed before defibrination, except medium sand; (3) after defibrination, establish mesopore gauze one; (4) before entering stuff box, establish sand trap; (5) in the head box bottom of paper machine, establish aperture gauze one, except fine sand;
3, adopt fourdrinier wire major diameter twin-tub (the copy paper cylinders that diameter is 3.66 meters);
4. regulate each equipment front and back pulp density.(1) the adjusting, to machine chest to pulp density in feed pipe for mortar between slurry-stablizing case, stablizes pulp density, thereby stablizes blowing amount, reaches the object that is stable into paper.(2) the slurry concentration, before observing and controlling disc mill, to improve quality and the yield of beater., the slurry concentration of observing and controlling before floating for three sections of towers, with constant rate of production, reduce costs, reduce pollution.(4), observing and controlling slip house slurry is transported to the concentration of slurry in machine room process., observing and controlling slurry mixing melting process, reach the object of stablizing ratio with slurry.
5, adopt flexible wire-dividing broom purification beating process; To adopt rare earth alloy modification abrasive disc, and at surface overlaying hard tungsten alloy particle.The material of described rare earth alloy modification abrasive disc is: C 0.1-0.35, Si 0.15-0.30, Mn 0.5-1.8, Cr 9.0-11, Ni 2.5-3.7, V 0.6-1.2, W 1.3-1.6, La (lanthanum) 0.2-0.5, Pr (praseodymium) 0.2-1;
Described hard tungsten alloy particle is the tungsten carbide filler rod that adopts Xuzhou San Yuan wlding Co., Ltd to produce, http://www.xzsyhc.com/.
Owing to having used rare earth alloy modification, the multicomponent alloy abrasive disc of high rigidity, high tenacity, surface overlaying hard tungsten alloy particle, is similar to emery wheel friction force in pulping process, promoted the wire-dividing broom purification of fiber, improved its adhesion, fiber flexibility is also improved.
6, adopt high speed hot blast to penetrate page technique, hot blast temperature is 250-350 ℃; Improve bagasse paper tightness excessive, the defect that bulking intensity deficiency and infiltration rate are slow.
Below describe detailed process and the principle of above-mentioned step in detail:
1, the present invention adopts cane syrup: wood pulp weight ratio is 65-75:25-35; Proportioning mainly consider that although water imbibition is better, hardness is larger if adopt full cane syrup copy paper, pulling force is slightly poor, after mixing the wood pulp of 25-35%, can improve pliability and the toughness of paper.
2, the present invention adopts five road desanding, and (1) establishes macropore gauze one before pulp washing case, except coarse sand; (2) sand removing machine is installed before defibrination, except medium sand; (3) after defibrination, establish mesopore gauze one; (4) before entering stuff box, establish sand trap; (5) in the head box bottom of paper machine, establish aperture gauze one, except fine sand; More can guarantee pulp quality, can make felt starching even, fourdrinier wire major diameter twin-tub because sand erosion paper machine is surperficial, can also guarantee that facial tissue product is soft at the Shi Buhui that runs up, free from admixture, and product percent of pass reaches more than 99.5%.
3, to adopt the benefit of fourdrinier wire major diameter twin-tub (the copy paper cylinders that diameter is 3.66 meters) be to increase production capacity in the present invention, and speed is fast, and copy paper cylinder that can loss-rate minor diameter is little by 30%, and copy paper easy control of temperature, can improve the quality of products.
4, regulate each equipment front and back pulp density.Adopt instrument to measure concentration, for example, use HTDQ-N type slurry concentration automatic monitoring instrument (international No. 1 building of Jiaozuo City Jia Long) to the pulp density before and after distinct device.After observing and controlling, regulate in time pulp density, guarantee that each position flow velocity and starching are even, paper machine work is just very normal, and product quality is also greatly enhanced, and percent defective was reduced to below 0.5% by 5% of the past.
5, flexible wire-dividing broom purification making beating is to be to retain certain fibre length to the requirement of beating process, and makes fiber have wire-dividing broom purification to a certain degree, under identical wet strengthening agent, improves beating degree, can obtain higher intensity.But if beating degree is too high, although paper strength is higher, prestige paper tightness is large.Water imbibition is little, makes into paper deflection high when increasing energy consumption, comfort level when impact is used; If beating degree is too low, though good water absorption, paper-forming evenness is not good enough, and pulling force is less.
The present invention adopts rare earth alloy modification abrasive disc, and at surface overlaying hard tungsten alloy particle, abrasive disc abrasion resistance is fine, and greatly having improved fiber has wire-dividing broom purification rate.
6, the present invention adopts high speed hot blast to penetrate page technology, improves bagasse paper tightness excessive, the defect that bulking intensity deficiency and infiltration rate are slow.Adopting hot blast impingement drying (TAD) is that hot-air is forced to pass through page, face tissue is had compared with high bulk and flexibility, higher bulkiness, can select the surface structure of face tissue-it makes the durability of fiber better, makes lower quantitative facial tissue product have higher water imbibition.
The invention has the beneficial effects as follows:
1, take high mixture ratio cane syrup and a small amount of wood pulp is main raw material(s), cane syrup: wood pulp weight ratio is 75-85:15-25; Design targetedly rational fibre furnish and process conditions, and cooperation adopts five road sand removing process usings, regulate each equipment front and back pulp density, adopt high speed hot blast to penetrate page technique, can make face tissue have compared with high bulk and flexibility, higher bulkiness, can select the surface structure of face tissue-it makes the durability of fiber better, makes lower quantitative facial tissue product have higher water imbibition.
2, the page that short long mesh paper making machine is produced, evenness is better, and intensity is better, and page is fine and smooth.Short long mesh paper making machine is in fourdrinier part paper sheet formation and dehydration, first paper pulp flow out from head box crest of weir, with fixed speed and angle, be sprayed onto on the wire side of fourdrinier wire, thereafter, paper stock is subject to fourdrinier wire dewatering elements off the net (as table roll, chopping board, suction flat box and suction couch roll etc.) the filtration that produces such as vacuum draw, slough most water and fiber and additive are deposited on the net, formed wet web, l Water Paper page again through press section, drying section, batch, arrive afterwards rewinding, paper wrapup procedure is even again
3, adopt flexible wire-dividing broom purification beating process, want to produce a good face tissue, the control of beating process is extremely important, should guarantee certain dry by force, wet strong, and hardness, deflection, have good absorption of water, suitable flexibility again.Beating degree is too high, and the paper pull of producing is large, and intensity is high, and deflection is good, but paper density is large, and loose not, water imbibition is poor.Adopt low beating degree, tip-tap slurry, the paper that the slurry of few wire-dividing broom purification is ferreted out is loose porous, and fluffy softness, absorbs water, but hardness, deflection are poor, and pulling force is little.During the present invention produces, the treatment principle of beating process is: long fiber is carried out to cut-out and wire-dividing broom purification to a certain degree, short fiber is only discongested, fiber dispersion and not cutting off.
4. regulate each equipment front and back pulp density.(1) the adjusting, to machine chest to pulp density in feed pipe for mortar between slurry-stablizing case, stablizes pulp density, thereby stablizes blowing amount, reaches the object that is stable into paper.(2) the slurry concentration, before observing and controlling disc mill, to improve quality and the yield of beater., the slurry concentration of observing and controlling before floating for three sections of towers, with constant rate of production, reduce costs, reduce pollution.(4), observing and controlling slip house slurry is transported to the concentration of slurry in machine room process., observing and controlling slurry mixing melting process, reach the object of stablizing ratio with slurry.
Accompanying drawing explanation
Fig. 1 is the method process chart of production method of the face tissue of soft fluffy of the present invention.
In Fig. 1, see, former slip enters first desanding after stock tank, then enters flexible making beating, adds dry, wet strength agent, send into machine chest, desanding, slagging-off, cross selectifier, enter steady stock tank, add that dispersant is laggard enters flow box, remove fine sand, online, hot blast penetrate, upper 3.66 meters of drying cylinders, and coil paper obtains facial tissue product.
Fig. 2 is that hot blast of the present invention penetrates pressure by the device structure schematic diagram of paper page drying position.
From Fig. 2, see, the structure of equipment is to adopt air-heater hot blast out to penetrate page, obtains the better face tissue of pliability.
The specific embodiment
Embodiment 1
Adopt weight content cane syrup: the proportioning that wood pulp is 75:25, adopt five road desanding, (1) establishes macropore gauze one before pulp washing case, except coarse sand; (2) sand removing machine is installed before defibrination, except medium sand; (3) after defibrination, establish mesopore gauze one; (4) before entering stuff box, establish sand trap; (5) in the head box bottom of paper machine, establish aperture gauze one, except fine sand; Adopt again the fourdrinier wire major diameter twin-tub copy paper easy control of temperature of 3.66 meters, can improve the quality of products.Use HTDQ-N type slurry concentration automatic monitoring instrument to the paper before and after distinct device, concentration.After observing and controlling, regulate in time pulp density, guarantee that each position flow velocity and starching are even, again with flexible wire-dividing broom purification making beating, make fiber have wire-dividing broom purification to a certain degree, then adopt high speed hot blast to penetrate page technology, 250 ℃ of hot blast temperatures, make to produce compared with high bulk and flexibility the face tissue of higher bulkiness.
Wherein, flexible wire-dividing broom purification beating process, is to adopt rare earth alloy modification abrasive disc, and at surface overlaying hard tungsten alloy particle; The material of described rare earth alloy modification abrasive disc is: C 0.30, and Si 0.20, and Mn 1.2, and Cr 10, Ni3.0, and V 1.0, and W 1.5, La 0.3 praseodymium (Pr) 0.8, all the other are Fe.
Embodiment 2
1, adopt weight content cane syrup: the proportioning that wood pulp is 65:35, adopt five road desanding, (1) establishes macropore gauze one before pulp washing case, except coarse sand; (2) sand removing machine is installed before defibrination, except medium sand; (3) after defibrination, establish mesopore gauze one; (4) before entering stuff box, establish sand trap; (5) in the head box bottom of paper machine, establish aperture gauze one, except fine sand; Adopt again the fourdrinier wire major diameter twin-tub copy paper easy control of temperature of 3.66 meters, can improve the quality of products.Use HTDQ-N type slurry concentration automatic monitoring instrument to the paper before and after distinct device, concentration.After observing and controlling, regulate in time pulp density, guarantee that each position flow velocity and starching are even, again with flexible wire-dividing broom purification making beating, make fiber have wire-dividing broom purification to a certain degree, then adopt high speed hot blast to penetrate page technology, 300 ℃ of hot blast temperatures, make to produce compared with high bulk and flexibility the face tissue of higher bulkiness.
Wherein, flexible wire-dividing broom purification beating process, is to adopt rare earth alloy modification abrasive disc, and at surface overlaying hard tungsten alloy particle; The material of described rare earth alloy modification abrasive disc is: C 0.1, and Si 0.15, and Mn 0.5, and Cr 9.0, and Ni 2.5, and V 0.6, and W 1.3, La 0.2 praseodymium 0.2, and all the other are Fe.
Embodiment 3
1, adopt weight content cane syrup: the proportioning that wood pulp is 70:30, adopt five road desanding, (1) establishes macropore gauze one before pulp washing case, except coarse sand; (2) sand removing machine is installed before defibrination, except medium sand; (3) after defibrination, establish mesopore gauze one; (4) before entering stuff box, establish sand trap; (5) in the head box bottom of paper machine, establish aperture gauze one, except fine sand; Adopt again the fourdrinier wire major diameter twin-tub copy paper easy control of temperature of 3.66 meters, can improve the quality of products.Use HTDQ-N type slurry concentration automatic monitoring instrument to the paper before and after distinct device, concentration.After observing and controlling, regulate in time pulp density, guarantee that each position flow velocity and starching are even, again with flexible wire-dividing broom purification making beating, make fiber have wire-dividing broom purification to a certain degree, then adopt high speed hot blast to penetrate page technology, 350 ℃ of hot blast temperatures, make to produce compared with high bulk and flexibility the face tissue of higher bulkiness.
Wherein, flexible wire-dividing broom purification beating process, is to adopt rare earth alloy modification abrasive disc, and at surface overlaying hard tungsten alloy particle; The material of described rare earth alloy modification abrasive disc is: C 0.35, and Si 0.30, and Mn 1.8, and Cr 11, and Ni 3.7, and V 1.2, and W 1.6, La 0.5 praseodymium (Pr) 1, and all the other are Fe.
The present invention transforms technique and paper machine in January, 2013, adopts new technology and new equipment, and the quality obtaining is compared as follows:
Table 1 for the present invention transform before and after the comparison of face-cloth paper quality
Before transformation, adopt (1) three road sand removing process using, (2) adopt fourdrinier wire major diameter twin-tub; (3) before and after each equipment, pulp density is basic identical; (4) common beating process; (5) do not adopt high speed hot blast to penetrate page technique.
After transformation, adopt (1) five road sand removing process using, (2) adopt fourdrinier wire major diameter twin-tub; (3) regulate each equipment front and back pulp density; (4) adopt flexible wire-dividing broom purification beating process; (5) adopt high speed hot blast to penetrate page technique.
Claims (4)
1. a production method for the face tissue of soft fluffy, comprises and it is characterized in that the processing step of the preparation, pulp washing, desanding, defibrination, copy paper of paper pulp, dry, stamp and rolling:
(1) take high mixture ratio cane syrup and a small amount of wood pulp is main raw material(s), cane syrup: wood pulp weight ratio is 65-75:25-35;
(2) adopt five road sand removing process usings, (1) establishes macropore gauze one before pulp washing case, except coarse sand; (2) sand removing machine is installed before defibrination, except medium sand; (3) after defibrination, establish mesopore gauze one; (4) before entering stuff box, establish sand trap; (5) in the head box bottom of paper machine, establish aperture gauze one, except fine sand;
(3) adopt fourdrinier wire major diameter twin-tub;
(4) regulate each equipment front and back pulp density;
(5) adopt flexible wire-dividing broom purification beating process;
(6) adopt high speed hot blast to penetrate page technique.
2. a kind of production method of tissue of soft fluffy according to claim 1, is characterized in that: in (4) step, comprise the adjusting to pulp density in feed pipe for mortar between slurry-stablizing case to machine chest, stablize pulp density, stablize blowing amount; Slurry concentration before observing and controlling disc mill, to improve quality and the yield of beater; Slurry concentration before observing and controlling is floated for three sections of towers; Observing and controlling slip house slurry is transported to the concentration of slurry in machine room process; Observing and controlling slurry mixing melting process, stablizes ratio with slurry.
3. a kind of production method of face tissue of soft fluffy according to claim 1, is characterized in that: in (5) step, flexible wire-dividing broom purification beating process, is to adopt rare earth alloy modification abrasive disc, and at surface overlaying hard tungsten alloy particle; The material of described rare earth alloy modification abrasive disc is: C 0.1-0.35, and Si 0.15-0.30, Mn 0.5-1.8, Cr 9.0-11, Ni 2.5-3.7, V 0.6-1.2, W 1.3-1.6, La 0.2-0.5 praseodymium (Pr) 0.2-1, all the other are Fe.
4. a kind of production method of face tissue of soft fluffy according to claim 1, is characterized in that: in described (6) step, the hot blast temperature that adopts high speed hot blast to penetrate page technique is 250-350 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104313935A (en) * | 2014-10-23 | 2015-01-28 | 广东比伦生活用纸有限公司 | Fast dissolving roll paper and production method thereof |
| CN104452430A (en) * | 2014-10-23 | 2015-03-25 | 广东比伦生活用纸有限公司 | Super-soft aromatized household paper and production method thereof |
| CN104452429A (en) * | 2014-10-23 | 2015-03-25 | 广东比伦生活用纸有限公司 | Super-soft super-tough household paper and production method thereof |
| CN111775250A (en) * | 2020-06-09 | 2020-10-16 | 玉溪师范学院 | Bleaching method for improving turquoise degree of grass turfgrass of rabbit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111775250A (en) * | 2020-06-09 | 2020-10-16 | 玉溪师范学院 | Bleaching method for improving turquoise degree of grass turfgrass of rabbit |
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| CN103696318B (en) | 2016-05-18 |
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